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Proof step 5 from proof square-not-neg-02 (previous step)

0 < i, sqrt(i) < i, sqrt(i) ≤ 0, 0 ≤ i → 0 ≤ sqrt(i) ⊦ i = 0

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: square-not-neg-05: ⊦ 0 < i → sqrt(i) ≠ 0;% ⊦ i ≤ j → (j ≤ i ↔ i = j); (s)% ⊦ i ≠ j → (i ≤ j ↔ i < j); (s)